Best Overall

Geocel 2320 Tripolymer Gutter and Narrow Seam Sealant

Best Bang For The Buck

Amerimax SeamerMate Gutter Sealant

Best For Leaks

Liquid Rubber Waterproof Sealant - Multi-Surface Leak

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The master purpose of guttering is to channel rain away from the home and forestall it from damage the foundation or seeping into the cellar . During installation , rain gutter end cap and seams are surface with a whippy sealer designed to withstand hot and cold weather and temperate impacts . However , the gutter themselves are subject to all kinds of harsh precondition , which , flux with aging , could inevitably cause them to leak .

Several effective approach to furbish up rain sewer leak and mountain of different gutter sealants are available to consumers . However , gutter styles and materials vary well . What work well on vinyl , for example , may not be as effective on galvanized steel , aluminum , or fuzz . Plus , dissimilar kind of damage ask different reparation techniques . One product may sour better for pinholes or wisecrack , while another Cartesian product may be require for a separated end roof .

Geocel 2320 Tripolymer Gutter and Narrow Seam Sealant in a tube on a white background

As a event , we decide to quiz a variety of toilet installation and repair intersection , admit exterior caulks , tapes , and cap sealants . They differ significantly in applications programme methods and curing times , but each one is subject of creating a watertight seal on vinyl , PVC , and alloy gutters . Whether your project involves Modern gutter instalment or repairs and maintenance of old rain gutters , one of the following best sewer sealer available today will be able-bodied to handle the task .

How We Tested the Best Gutter Sealants

We simulated toilet installation andgutter leakrepairs in our tests and evaluated how each product performed on aluminum and premature ventricular contraction gutters . Using salvaged sections of aluminum and PVC sewer , we first drill a series of ⅛-inch and ¼-inch golf hole in the sewer bottoms and use the sealant product to repair the trap . Then , we used each product to set up toilet last caps on both sewer types .

Throughout examination , we made sure to purely follow the manufacturing business ’s instructions for each sealer . During the software process , we noted both whether the product was clean or mussy to use and how soft or difficult it was to clean up afterward . We also noted the figure of applications required , the cure sentence for each applications programme , the total therapeutic time , and overall durability . After we complete all app and installment , we fill up the gutters with pee , observed the water system level for 12 hours , and noted any leaks . Finally , we hit each toilet sealant on a scale of 1 to 5 for ease of program , ease of cleanup , warm result , and durability .

Our Top Picks

Our top plectrum feature a selection of the best gutter sealants on the grocery . We took into account each mathematical product ’s effectualness , value , and environmental wallop . While each trough sealant is a quality product , read on to discover which one may best suit your particular need .

Our rating : Application4/5;Cleanup4/5 : curative Time3/5;Durability5/5

Building professional person use Geocel 2320 tripolymer sealant because it ’s long-wearing and takes the guesswork out of gutter installing and repair projects . It cling to all types of material , works in any weather , and fill gaps up to ¼ inch in diameter . The self - leveling rule course deep into the crack and cures to shape a tough yet flexible bail bond . Each 10 - ounce tube hold enough production to extrude a ¼-inch bead of sealer up to 28 feet , using a standard calk gun . Our tests proved the efficacy of the Geocel 2320 sealant . After loading it in the caulking triggerman , we squeezed a few small beads of the sealant into the holes we had practise in the bottom of the gutter , then set up two end jacket . This product bond to anything it contacted , include concrete and Ellen Price Wood as well as the gutter cloth . It was easy to control the pressure and prevent messiness via the dripless characteristic on the caulking gun . Even though our initial finish was not perfect , the self - leveling grain allowed the ridge and bumps to settle into a fairly smooth finish . The only downside to this merchandise was the cure metre . Although a airfoil skin start to form within an hour , it was extremely fictile for 24 hours . However , after the 5 - solar day remedy time , the sealer was very sturdy , puncture - resistant , and to the full waterproof .

Amerimax SeamerMate Gutter Sealant in shiny yellow tube on white background

Get the Geocel sewer sealer atAmazon .

Our rating : Application4/5 ; Cleanup4/5 ; Cure Time3/5 ; Durability5/5

The Amerimax SeamerMate gutter sealer is a high - quality tripolymer product for metal gutters . Be aware that it is designed to stick to metal to metal and may damage other sewer materials . Applied with a caulking accelerator pedal , the ego - leveling formula fills gaps and holes up to ¼ inch and leaves a smooth , problematical finish . This sealant is designed for impregnable sewer installation and repairs that can withstand rough weather condition for decennary . One of the most low-priced gutter sealants we tested , Amerimax SeamerMate was easy to apply , easy to clean up , and formed an unbelievably stiff bail . Our drip - detached caulking gun helped prevent messes .

Brown tub of Liquid Rubber Waterproof Sealant on white background

The product ’s ego - flush consistence delivered professional - look results , and it was paintable the solar day after diligence . Although we preferred the final solution of the Amerimax SeamerMate over most of the other mathematical product , the slow cure time of up to 5 day might be problematic for some drug user . Also , for a single minor resort , the full 10 - ounce tube-shaped structure could be extravagant , and there is no way to reseal it for ulterior use once you ’ve opened it . Still , this sealant is a peachy product at a great price , good for midsize and larger repairs .

Get the Amerimax toilet sealant atThe Home DepotorAce Hardware .

Liquid Rubber Waterproof Sealant – Multi-Surface Leak

Our Ratings : Application4/5 ; Cleanup3/5 ; Cure Time4/5 ; Durability4/5

While a number of paintable , rubberise gutter sealant on the market are very efficient , many are regrettably solvent - base . water system - based Liquid Rubber sealant has virtually no smell yet all the benefit of its more toxic competitors . you’re able to apply Liquid Rubber with a crimper or even a piston sprayer — although the latter requires professional - grade equipment . This Cartesian product adheres well to both perpendicular and horizontal surfaces , and the power to execute without splitting or cracking intend it will flex as much as necessary without compromise adhesion . Liquid Rubber is UV - stable , so the Sunday ’s harmful ray wo n’t damage it .

Depending on the size of the fix , it may demand two coats , and a sluggish drying time have in mind it can take several days to fully complete the repair . In our examination , the first coat feel ironic after 12 hour , but we wait the full 24 60 minutes before applying another pelage . In all , we applied three coats over the ⅛-inch and ¼-inch holes in the bottoms of our gutters , but two coats would have been adequate . We filled the gutter with water 2 days after the last lotion , and it hold tight . you could paint over this sealant once it ’s amply dry .

Nine gutter sealants, tapes, and caulks laying on a granite countertop

Photo: Debbie Wolfe for Bob Vila

Get the Liquid Rubber trough sealant atAmazonorLowe ’s .

Best Value

Gorilla Waterproof Patch & Seal Tape

Our Ratings : Application3/5 ; Cleanup5/5 ; Cure Time5/5 ; Durability4/5

Gorilla waterproof tape provides a lasting repair about like a shot . It is 4 inches wide — a expert size for significant cracks or splits — and is one of the full ways to seal toilet bed . The adhesive grip is very effective on all gutter stuff . This product is UV - resistant and can withstand temperature as low as -70 degrees Fahrenheit up to 200 degrees Fahrenheit . Each roll is 10 feet long , and it will store almost indefinitely in an airtight bag at room temperature .

Although the manufacturer states that you’re able to give Gorilla tape recording to blind drunk surfaces , our tests reveal that only dry surfaces work well . The control surface also needs to be effectual : The tape will lift if the Earth’s surface is moth-eaten , flaking , or slimy . We had to snub the tape to fit with the patronage still in place ; otherwise , the mag tape stuck to the knife or scissors and was very difficult to remove . It ’s also authoritative to use caution while positioning the tape . Once we placed the tape , it was nearly impossible to murder .

Person spraying a sealant on holes in a gutter

Photo: Debbie Wolfe for Bob Vila

One downside is that the Gorilla mag tape did n’t meld well with the gutter Earth’s surface . The duncical profile of the tape stood out , as did the pure livid colour against the patina of our 50 - year - one-time gutters . to boot , this product is not paintable and so is best used on the interior of the trough , if potential , to hide the reparation .

Get the Gorilla gutter sealer atAmazon , The Home Depot , orWalmart .

Best Multi-surface

OSI Quad Max Clear Paintable Sealant

Our rating : Application4/5 ; Cleanup4/5 ; Cure Time4/5 ; Durability5/5

Primarily labeled as a windowpane , siding , and door sealant , OSI Quad Max is also extremely rated for toilet sealant applications . It has a high-pitched viscosity than other gutter sealants to allow for faster setup and produce a toughened watertight alliance that stands up to ultraviolet radiation ray , dust , dirt , and extreme conditions . This product is an excellent alternative if you need to keep a project move quickly , as it is paintable within an hour and cures fully in as little as 24 60 minutes . During our exam , we remark stiff resistance on the caulk artillery while apply OSI Quad Max sealant compared to most of the other sewer - tested Cartesian product .

This sealer is also less forgiving of sloppy work . Since it is n’t a self - pull down sealant , it did n’t flow downwardly into the voids quite as soundly , and any imperfections in the bead were likely to continue after heal if we did n’t take the time to smooth them out . However , once cured , our end caps and drilled holes stayed watertight .

Geocel 2320 Tripolymer Gutter and Narrow Seam Sealant in a tube on a white background

Photo: amazon.com

Get the OSI Quad Max gutter sealant atLowe’sorThe Home Depot .

Best for Metal Gutters

GE Metal Silicone 2 Sealant

Our Ratings : Application4/5 ; Cleanup4/5 ; Cure Time4/5 ; Durability4/5

While general - design products are often capable , specialist alternative invariably render a better solution . This GE sealant , for example , is word in particular for metal . It is a silicone - based sealer that we applied with swell accuracy and economy using a caulk gun during our tests . It flow easily into gaps , seams , and cracks , and we found the initial drying clip to be very speedy . This product is for good waterproof in around 30 minutes , although a full curative take 24 hour . The silicone polymer portion keeps the sealer whippy , so it will not shrink or crack . It has high UV resistance and can hold up temperatures from -60 degrees Fahrenheit to a staggering 400 degree Fahrenheit .

Although olfactory perception - liberal once cured , the GE sealer does utter an unpleasant vapor during coating , so it ’s crucial to wear a mask during use . It can also irritate the hide , so gloves and eye protection are equally necessary .

Amerimax SeamerMate Gutter Sealant in shiny yellow tube on white background

Photo: amazon.com

Get the GE gutter sealant atAmazon , Lowe’s , The Home Depot , orWalmart .

Best Spray

Rust-Oleum LeakSeal Spray

Our Ratings : Application5/5 ; Cleanup4/5 ; Cure Time4/5 ; Durability3/5

Rust - Oleum LeakSeal gutter spraying sealant contains butyl rubber , which is known for flexibleness and high bond . Spraying it on is an easy and commodious way to handle humble sewer stamping ground . This Cartesian product is dry to the mite in about 30 minutes , and you could hold a 2nd coat , if necessary . For instance , it may successfully fill gaps up to ¼-inch wide , but more than one program would be need . The sealer then takes 24 hours to amply cure .

Rust - Oleum LeakSeal is available in five colors and can also be painted over with latex paint or oil - ground paint . In our tests , Rust - Oleum LeakSeal spray went on as easily as promote , with a tight sprayer practice that helped minimize overspray . We used a scrap of cardboard to harbor the peripheral area , and it worked well . The sealant make full both the ⅛-inch and ¼-inch holes in a single app , but we impart a 2nd coat to increase strength . As with the tape and paint - on mathematical product , this spray sealer is not designed for attaching end caps . However , it did a exhaustive and relatively quick job of patching pinholes and bridging roast .

Brown tub of Liquid Rubber Waterproof Sealant on white background

Photo: amazon.com

Get the Rust - Oleum gutter sealer atAmazon , Tractor Supply Co.(black ) , orWalmart .

Best Tape

XFasten Super Waterproof Aluminum Butyl Tape

Our Ratings : Application4/5 ; Cleanup5/5 ; Cure Time5/5 ; Durability4/5

Waterproof butyl tape make believe trough compensate fast and leisurely . XFasten aluminum butyl tape has a unique “ quilted ” backing that allows the tape recording to conform to textured or odd Earth’s surface . The thick adhesive side embeds into surface emptiness for a perfect watertight primed , and the aluminum side is highly puncture - resistant . The cast measures 16 foot long by 4 inches panoptic and has a 5 - year repositing life , making it an idealistic choice for storage in an emergency repair kit .

To cover our ⅛-inch and ¼-inch holes , we cut ½-inch by ½-inch lame of the XFasten tape . Because the weather was coolheaded and juiceless , we were easily able to take the support and place the adhesive patches over the holes . The tape hold body of water instantly . Next , we added a wrinkle test by overlapping two gutter system sections — the end of one section nested inside the matching end of the other section , overlapping by 4 in . We taped the seam from the exterior , with the XFasten tape centered on the crease . Then , we bug the inner seam the same way . The tape provide a perfectly dribble - loose seal while strengthening the juncture .

Roll of Gorilla Waterproof Patch and Seal Tape in White on white background

Photo: homedepot.com

The main problem with the XFasten taping was that the sides of the scroll , where the adhesive was marginally debunk to air and handling , became extremely sticky . This made the roll more hard to handle , especially while tip interior seams . Still , the ending resultant was a strong raincoat patch that was quick within second base or else of hours or days .

Get the XFasten trough sealer atAmazon .

Also Consider

Flex Seal Spray-On Liquid Rubber Sealant

Flex Seal sealant has been an infomercial staple for old age , and it works as advertised for pelting gutter and downspout repairs . This rubbery merchandise decease on like spray paint and becomes a sturdy , flexible , watertight skin that defy sagging and dripping in hot weather and wo n’t check in cold weather condition . It ’s a not bad choice for quick repairs of tattling wrinkle and pinhole .

Since our examination geological period was in previous November , we take bill of one instruction in particular . Flex Seal expect an aviation temperature of at least 65 degrees Fahrenheit during program , so we performed our testing on a warm afternoon . After applying the first coat , we waited 24 hours before use a second coat . After another 24 hour , we tested the seal . It worked perfectly on the ⅛-inch and ¼-inch holes as well as the overlap crease . The gutter was leak - liberal , and the cured spray show a mediocre amount of huskiness against effort at scraping with a blusher scraper and puncturing with a finishing nail .

We did n’t know that Flex Seal sealant required modest temperature for app . However , we did like how well-fixed it was to apply and how effective it was once cured . This Cartesian product is also useful for a wide range of home task , so it could be a handy particular to have available .

OSI Quad Max Clear Paintable Sealant in tube on white background

Photo: amazon.com

Get the Flex Seal gutter sealant atAmazon(2 - pack),The Home Depot , Walmart , orStaples .

Jump to Our Top Picks

What to Consider When Choosing a Gutter Sealant

There are several condition to keep in mind when choosing a trough sealer . While thegutter materialis a key broker , the office and case of leak can also impact your selection . Prevailing weather conditions , curing clip , and the flexibleness of the final seal also take on a part . Here are the characteristic that the in force gutter sealer have in unwashed — as well as what might make one product well for a particular problem than another .

Type

Before tell apart between type of sealants , it ’s significant to recognize thatcaulkand sealer are unlike products . Caulk usually come in a tube , which you apply using a caulk gun . Acrylic caulk are urine - based and paintable , but they lack the flexibility of sealants . As a upshot , they are more prone to cracking — particularly under wide temperature fluctuation — so annul using acrylic caulks to seal toilet .

The best rain gutter sealant can be either water- or solvent - free-base . Some of the latter emit a strong aroma and can be irritating to the skin , eyes , and nasal passages , so be sure to wear glove , eye protection , and a mask during use .

dissimilar sealant can vary well :

Black and red spray bottle of Rust-Oleum LeakSeal Flexible Rubber Coating on white background

Photo: walmart.com

Adhesion Strength and Surface

How well a peculiar sealant adheres to the gutter material is clear of major importance . Most sewer are made of vinyl or aluminum , but some sewer are constructed of galvanized steel , zinc , or copper . Certain sealer may not stick to particular surfaces , and while ecumenical - purpose sealants can be various , no single product is the best trough sealant for all materials . Thus , it ’s lively to check compatibility . Failure to do so may mean a temporary fix , but adhesion intensity will be compromised and the news leak might presently reappear .

No matter the gutter material , preparation will be key . Nearly all of the best gutter sealant reviews emphasize the need to be the manufacturer ’s operating instructions cautiously , and we resound that advice : It ’s all-important to read and follow directions to avoid failure of the mending .

Dry Time, Flexibility, and Durability

Gutter sealant can require anywhere from under an hour to up to several days to dry all . That can be a self-aggrandising conflict if there ’s only a short time window for the fixing , especially if you also postulate to paint the gutter .

by and large speaking , a degree of tractability in a sealant is beneficial because gutters are subject to movement from flatus and temperature modification . tractability can also impact the durability of the repair . It ’s not only about outlast freeze temperatures but also the all-inclusive range of temperatures a repair may have to stomach depending on the part of the country in which you dwell . alloy gutters in surface area that experience extreme wavering in conditions condition can be particularly ambitious because of how much they will amplify and reduce .

It ’s worth view a sealant that contain ultraviolet inhibitor , which give increase security against the harmful core of the sun ’s rays . chemic resistance can also be good . Salt , for illustration , can be a problem for house in coastal areas .

Roll of XFasten Super Waterproof Aluminum Butyl Tape on white background

Photo: amazon.com

Versatility

legion products are designed to seal gutter and nothing else . shopper can buy other ware , however , for various coating and repair purposes — from sealing around window build to cook hole in pool liners . If you only have a modest gutter stamping ground , it may be stinting to purchase aversatile sealantthat could fall in handy later for another home base melioration task .

Still , be sure to condition ledge liveliness before investing in a large can of multipurpose sealer : Some of these products have a special utile life-time once give . In these case , a sealant might work well for sewer repair now , but when a unlike project arises in a few months , it might have hardened and become useless .

Tips for Using Gutter Sealants

As noted above , remember to surveil the producer ’s instructions as closely as possible for any sewer sealant you leverage . In terminus of basic advice , the comply tips should serve ensure a successful trough repair .

FAQs

The gutter textile , prevailing weather condition conditions , and the type of sealant all impact longevity . If applied cautiously while paying confining attention to the manufacturer ’s instructions , a gutter sealant should last at least several old age . Extreme cold or heat can reduce that time , but a heedful merchandise pick can maximise enduringness .

Use a caulk and sealant remover like Krud Kutter , mineral spirits , or lacquer thinner to remove honest-to-goodness gutter sealant . Apply meagerly , allow it to soak in , and then face-lift with a putty knife or a chisel . Apply more remover if ask and wipe with a rag until you have a smooth , clean airfoil .

Some polyurethan sealants are safe to hold while moisture is present , though it is in general recommended to only seal gutters when they are dry . However , depending on the temperature , waiting 2 to 3 hours after the rainfall stop to apply sealant should be safe .

Two spray bottles of Flex Seal Spray-On Liquid Rubber Sealant on white background

Photo: amazon.com

It depends on the product , so check the manufacturer ’s instructions . Keep in creative thinker that no type of gutter sealer should have protract contact with the skin , so it ’s right to wear gloves . In particular , nitrile oeuvre gloves are pretty tough yet fragile enough not to restrict your bowel movement .

Meet the Tester

Mark Wolfe is a author with an extensive background signal in the green industry and an avid DIYer who live in a 50 - yr - erstwhile home . When he is n’t spell , he drop his clock time upgrading , remedy , and supplant anything and everything in his home , yard , and garden . He tests and writes critical review about mitt tool , lawn care and domicile fix products , and out-of-door living goods .

Additional research put up by Bob Beacham .

Everything You want for a Lush and Healthy Lawn

Person squeeze a gray caulk sealant onto the seams of a white gutter

Photo: Debbie Wolfe for Bob Vila

Keeping your grass green and your plant flourish does n’t just take a green ovolo — it starts with the correct tools and supplies .

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